Conservationists at the archaeological site of Paestum in Italy have successfully applied a revolutionary 'Nano-Diamond' protective coating to the limestone columns of the Temple of Neptune. This transparent, ultra-thin layer is designed to repel sea salt and humidity, which have caused significant surface spalling over the last century.
The new technology, developed by a consortium of heritage engineers, allows the stone to 'breathe' while preventing the crystallization of salts within the pores of the limestone. Initial sensors indicate a 90% reduction in surface moisture absorption, potentially extending the lifespan of the monument by centuries without altering its aesthetic appearance.